Add CHACHA20 alias for ciphers.

Update ciphers documentation as well (based on -04 rev of ID).

Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Rich Salz <rsalz@openssl.org>

RT: #4206, GH: #642

doc/apps/ciphers.pod

diff --git a/doc/apps/ciphers.pod b/doc/apps/ciphers.pod
index 066f1e6..e3fa4c0 100644
--- a/doc/apps/ciphers.pod
+++ b/doc/apps/ciphers.pod
@@ -280,6 +280,10 @@
 cipher suites using 128 bit CAMELLIA, 256 bit CAMELLIA or either 128 or 256 bit
 CAMELLIA.
 
+=item B<CHACHA20>
+
+cipher suites using ChaCha20.
+
 =item B<3DES>
 
 cipher suites using triple DES.
@@ -657,6 +661,16 @@
  DHE_PSK_WITH_AES_128_CCM_8                DHE-PSK-AES128-CCM8
  DHE_PSK_WITH_AES_256_CCM_8                DHE-PSK-AES256-CCM8
 
+=head2 ChaCha20-Poly1305 cipher suites from draft-ietf-tls-chacha20-poly1305-04, extending TLS v1.2
+
+ TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256      ECDHE-RSA-CHACHA20-POLY1305
+ TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256    ECDHE-ECDSA-CHACHA20-POLY1305
+ TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256        DHE-RSA-CHACHA20-POLY1305
+ TLS_PSK_WITH_CHACHA20_POLY1305_SHA256            PSK-CHACHA20-POLY1305
+ TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256      ECDHE-PSK-CHACHA20-POLY1305
+ TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256        DHE-PSK-CHACHA20-POLY1305
+ TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256        RSA-PSK-CHACHA20-POLY1305
+
 =head1 NOTES
 
 Some compiled versions of OpenSSL may not include all the ciphers